Device for locking stereotype-plates



(No Model.)

J. T.- DENVIR. DEVICE FOR LOOKING STEREOTYPE PLATES.

Patented June 24, 1890.

E; k QwwMw I x E 1% E UNITED STATES PATENT OFFICE.

JOHN T. DENVIR, OF CHICAGO, ILLINOIS.

DEVICE FOR LOOKING STEREOTYPE-PLATES.

SPECIFICATION forming part of Letters Patent No. 430,630, dated June 24, 1890.

Application filed January 20, 1890. Serial No. 337,559. (No model.)

To all whom it may concern.-

Be it known that I, JOHN T. DENVIR, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois,have invented new and useful ImprovementsinDevicesforLockingStereotype- Plates, of which the following is a specification, reference being bad to the accompanying drawings illustrating the invention, in which Figure 1 is a plan view of the chase and a broken plan view of six columns of stereotype-plates locked therein in part by means of my devices. Fig. 2 is a broken enlarged elevation of one column-rule; Fig. 3, an enlarged broken section of two stereotype-plates and the bed-plate, showing the groove in said plate and the lug or pin which engages a slot in thecolumn-rule to hold it in place. Fig. 4 is a section of a portion of the sub-head and of one stereotype-plate, showing on one column-rule a sharp nib or projection which holds the sub-head in place on line 11, Fig. 1. Fig 5 is an enlarged detail, in section, on line 00, Fig. 1, showing the devices for holding the stereotype laterally together in the chase; Fig. 6, an enlarged broken section of two stereotype-plates, showing how the columnrule is held in the groove in the bed-plate; Fig. 7, a vertical section of Fig. 1 on line z, showing how the column-rule is held in the groove in the bed-plate. Figs. 8 and 9 are a broken enlarged elevation of one column-rule and the bed-plate, showing more clearly than at Fig. 7 how the rule is held by grooves and tenons. Fig. 10 is a vertical section of Fig. 1 on line y.

The purpose of this invention is to provide better means for holding stereotype-plates in chases and holding the column-rule to the bed-plate, whereby the sub-head may be replaced with one of another lettering.

The gist of the invention and the method of construction and application will be fully comprehended by the following detail description.

A represents the chase,and B the bed-plate, both of ordinary construction.

0n the bed-plate and between the stereotype-plates are formed grooves G O, &c., of a width fully double the thickness of any one rule which divides the columns. This width is necessary, in order that they may have a lateral movement should the stereotype-plates have slightly different widths and the groove have a depth suflicient for the support of the column-rules by the means herein shown.

At Figs. 7, 8, and 9, the ends of the columnrules are shown to have open mortises in their ends to engage tenons M, formed on the end margins to the grooves C. The grooves in the bed-plate are twice as wide as the rules are thick, whereby the rules provided with mortises in their ends can be made to engage projections M, which extend from one margin of the grooves to half of their widths by inserting the rules to the bottoms of the grooves and then setting them laterally onto the tenons. This is one simple means for holding the rules in the grooves, as in Figs. 8 and 9, where the two ends of one rule is shown on said tenons M. Any of the Well-known means for holding the rules in place may be employed in the grooved bed-plate. O'ne rule D, opposite to the sub-head1 is provided with a sharp-pointed nib 0, Figs. 4 and 1, which projects into said sub-head and holds it in place, but in a manner that it may be removed by mechanism as follows: A plate of metal K is placed between the bed-plate B and the adjacent quoins f, and it extends from side to side of the chase A. The inner top edge of the plate is rabbeted down even with the bedplate 13 to support a pressure-bar H, which bears against the stereotype-plate 1.

Between the bar II and a shoulder 011 the bar K is placed a metal wedge F, which, together with the bar H, is held to the bar K by means of plates G, secured to bar K and bearing on the bar H and wedge. The bar K is provided with an upwardly-projecting end portion L, and the wedge F with an upwardly-projecting end portion J, Figs. 1 and 5, and collared into this portion is the shank of a thumb-screw E S, the screw portion turning in thread in the portion J, whereby when the screw is turned the wedge F will be made .to force the bar H against the stereotypeplates 1 and 1, and lock them in the chase. By turning the screw back, the plate 1' may be removed without disturbing the other plates 2 3 4 5 6, or all the plates may be removed. It will be understood that the subhead 1' is to be changed in the printing of one side of country newspapers.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. In devices for locking columns of stereotype-plates in a chase, the bed-plate 13, provided with grooves O and column-rules of widths corresponding with the height of the stereotype plates and the depths of the grooves, and the rules removably secured in the grooves, in combination with a Wedge for setting the stereotype-plates firmly in the chase, asspecified.

2. A column-rule provided with a pointed nib to engage a depression in the sub-head,

in combination with the rabbeted plate K, pressure-bar I-I, bearing against the sub-head, and a wedge for clamping the same against the adjoining stereotype-plate, as specified.

3. A bar placed between one set of quoins and the bed-plate provided with a recess on its inner top edge, in combination with a pressure-bar and an intervening Wedge inserted in said recess, with cap-plates over the wedge and bar, and a screw for operating the Wedge, substantially as and for the purpose specified.

JOHN T. DENVIR. -Witnesses:

G. L. GHAPIN, JOHN L. LINooLN. 

